*{
    margin: 0;
    padding: 0;
}

/* header */

#h_h1{
    /* border: 1px solid black; */
    line-height:65px;
    height: 65px;
    width: 100%;
    position: relative;
}
h1{
    position: absolute;
    left: 25%;
}
/* nav */
nav{
    background-color: black;
    height: 45px;
    position: relative;
    text-align: center;
}
#nav_menu{
    /* border: 1px solid white; */
    width: 1100px;
    text-align: center;
    line-height: 45px;
    /* position: absolute;
    left: 30%; */
    margin: auto;
}
#nav_menu ul{
    list-style-type: none;
}
#nav_menu li{
    float: left;
}
#nav_menu a{
    /* border: 1px solid white; */
    display: block;
    width: 220px;
    height: 45px;
    text-decoration: none;
    color: white;
    font-size: 18px;

}
nav #last_a::before{
    content: url(images/rss.png);
}

/* 文章主体 */

/* main{
    margin-top: 10px;
    background-color: rgb(240, 241, 241);
} */

article{
    /* border: 1px solid black; */
    width: 1000px;
    height: auto;
    margin: auto;
    position: relative;
}

/* center_implant */
#implant{
    /* border: 1px solid black; */
    padding-top: 15px;
    position: relative;
}
#implant img{
    width: 100%;
    height: 250px;
    border-radius: 20px;
}
#implant #title_1{
    position: absolute;
    top: 55px;
    left: 30px;
    color: white;
}
#implant #title_1 div{
    width: 380px;
    margin-top: 10px;
    letter-spacing: 1px;
}

/* left */
#left {
    /* border: 1px solid black; */
    width: 70%;
    height: 100%;
    position: relative;
}
#one_her{
    margin-top: 5px;
}
#one_her p{
    color: gray;
    font-style: italic;
}
/* 盒子文字 */
.w{
    /* border: 1px solid black; */
    width: 45%;
    font-size: 14px;
}
#w1{
    margin-top: 15px;
}
#w2{
    margin-top: 40px;
    margin-bottom: 15px;
}
#w2 img{
    width: 316px;
    box-shadow: 6px 6px 10px gray;
}
#w3{
}
#w4{
    position: absolute;
    top: 80px;
    right: 25px;
}
#w5{
    position: absolute;
    top: 250px;
    right: 25px;    
}

/*  */
#hr{
    width: 95%;
    margin-top: 20px;
    margin-bottom: 15px;
}

/* comment */
#bot h2{
    margin-bottom: 15px;
}
.d{
    /* border: 1px solid black; */
    height: 100px;
    position: relative;
}
.dd1{
    /* border: 1px solid black; */
    position: absolute;
    width: 35%;
    left: 20px;
    top: 20px;
}
.dd2{
    /* border: 1px solid black; */
    position: absolute;
    width: 60%;
    right: 20px;
    top: 20px;
}
#si_back{
    width: 98.5%;
    border-radius: 15px;
    height: 100px;
    position: absolute;
    top: 100px;
    right: 0;
}
.dd1 p:first-child{
    font-weight: bold;
    text-decoration: underline;
}


/* right */

#right{
    
    position: absolute;
    width: 29.5%;
    right: 3px;
    top: 271px;
}
#right_back{
    position: absolute;
    top: -6px;
    width: 300px;
    height: 1024px;
    opacity: 0.5;
    border-top-right-radius: 10px;
}
.ri{
    /* border: 1px solid black; */
    position: absolute;
    width: 90%;
    right: 5px;
    height: 200px;
    border-radius: 10px;
    background:linear-gradient(rgb(230, 227, 227),rgb(245, 244, 244))
}
dl{margin-left: 25px;margin-top: 5px;}
dt{font-weight: bold;font-size: 20px;}
dd{margin-left: 20px;}
#div1{
    top: 10px;
}
/* #right_section_img{
    position: absolute;
    width: 100%;
    height: 200px;
} */
#div2{
    top: 230px;
}

/* footer */
footer{
    text-align: center;
    background-color: black;
    height: 60px;
    color: white;
    line-height: 60px;
}
